Lock for car-doors.



No. 823,762. PATENTED JUNE 19, .1906.

I O. ML OARNAHAN.

LOOK FOR OAR DOORS.

APPLICATION FILED we. 16, 1905 2 sums-sum 1,

wn'ues sss mvsn'ron Aunniw H cnmm cm. movo-umoauwuins. wAsmucmm n. c.

- PATENTED JUNE 19. 1906.

- G. M. GARNAHAN.

LOOK FOR. GAR DOORS.

' APPLICATION FILED AUG.16, 1905.

f 2 SHEETS-SHBBT 2. j ggli- W5 1111111111. .LliliiilliZIlIIf.-- ZT 8 1 "9 19 17 '76 Z7 8 1a 1 8 X 16 l 15 .3 .3 4 II .15 1 10? I 5 6 0 x UNITED sTATEs PAT NT OFFICE.

CYRUS M. OARNAHAN, OFVSANDY LAKE, PENNSYLVANIA, AssIeNOR TO FIDELITY TITLE AND TRUST OOMPANY, OF PITTSBURG, PENNSYL- vANIA, A CORPORATION OF PENNSYLVANIA.

LOCK FOR CAR-.DOORS.

Specification of Letters Patent.

Patented June 19, 1906.

Application filed August 16, 1905. Serial No. 274.357.

8 To aZZ whom it may concern.-

tion.

Be. it known that I, CYRUS M. CARNAHAN, of Sandy Lake, in the county of Mercer and State of Pennsylvania, have invented a new and useful Lock for CarDoors, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which-- Figure 1 is a side elevation, partly in sec.

tion, of a part of a car illustrating my inven- Fig. 2-is a vertical crosssection of the same. Fig. 3 is a detached side elevation of the locking-bar. Fig. 4 is a plan view of the same. Fig. 5 is a detached view of'the locking-sextant, and Fig. 6 is a plan view of the same.

My invention relates to an improvement in look for car-doors.

It is especially adapted for use in connection with dumping-cars and it consists in devices by means of which the doors may be securely locked and so unlocked that any or all of the doors may be opened one at a time or so unlocked that'all of the doors may be opened by the movement of a single lever.

I will now describe my invention so that others skilled in the art may manufacture and use the same.

In the drawings, 2 represents a dumpingcar having an inclined bottom 3 and outwardly-swinging doors 4, which are hinged to the side of the car and in their closed position are inclined inwardly. Extending trans versely across the face of the doors is an angle-bar 5, the vertical flange of the anglebar being'secured to the face of' the door while the horizontally-projectingflange projects at rightangles therefrom. These doors 4 may extend one after the other along the side of the car, being separated from each other merely by the vertically-inclined beams 8 at each side of each door where they meet one with the other. The vertical flange 6 of the angle-bar 5 is cut away, as at 7, while the horizontal flanges extend until they nearly abut against the inclined beams 8. Extending between the inclined beam 8, and the vertical beam 9 is a bar 10, to which is pivoted the lock 11, which is rovided with the lug 12 and the lug 13, t is lock being ada ted to engage with the horizontal flange of t e angle-bar 5, the flange fitting within the angle formed by the lugs 12 and 13. One of these locks is arranged at each side of each door and adapted to engage with the horizontal flange 6 where the vertical flange is cut away. The outer and long arm rocking bar 14 of the lock 11 extends outwardly to a point near the vertical beam 9, where it is pivoted to the vertical rod 15, the other end of which rod 15 is pivoted to a short arm 16, the other end of which is pivoted eccentrically to the sextant 17, which sextant is keyed to the horizontal shaft 18, which extends longitudinally the length of the car on both sides of the same. The arm 16 and the sextant 17 together form (what may be termed a "toggle connection between the rod 15 and the body of the car. When the doors 4 are closed, lugs 12 and 13 will bearagainst the horizontal flange of the angle-bar 5, locking the door and holding it in its closed position. At the same time the rod 15 and arm 16 are prevented from movement, owing to the position of the sextant 17, as isshown at the left hand of Fig. 2. By turning the shaft 18 on its axis by the hand-lever 19 at the end of the car the sextant 17 may be brought to the position shown in Fig. 5 andin dotted lines at the left hand of Fig. 2, which permits the arm 14 and rod 15 to be raised by the hand of the brakeman sufficiently to cause the face of the lug 13 to pass below the horizontal flange 6 of the angle-bar 5, thus releasing the door and permitting it to swing open underits own weight. Instead of opening the doors one by one in this mannerthat is, by unlocking the sextant 17 and releasing the door by handall the doors may be unlocked and released simultaneously by a further rotatory movement of the shaft 18, which brings the arm 14, rod 15, arm 16, and the sextant 17 to the position shown on the right hand of Fig. 2 and automatically releases the engagement of the lug 13 with the horizontal flange 6 of the anglebar 5. The purpose of cutting away the vertical flange of the angle-bar 5 is to permit this flange to swing past the lock 11, when the lug of the lock is brou ht below the horizontal flange 6. To .100 v the doors, it is only necessary to close them to allow the sextant to descend to the position shown at the left hand of Fig. 2.

It 'will'be apparent to those skilled in the art that many changes may be made without departing from my invention.

The advantages of my invention result from the construction that enables the doors to be released, or lock-set, as it might be called, ready to throw open, to be not only released but to be thrown open by the movement of a single lever, to be securely locked in their closed position, and to remain looked under the force of gravity.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. A look for car-doors consisting of a rocking bar, the head of which is adapted to engage with the swinging door of the car; a rod pivoted to the outer end of the rocking bar, and a toggle connection at the other end of the rod; substantially as specified.

2. In a lock for ear-doors, the combination of a pivoted rocking-bar, a swinging car-door having a projection adapted to engage with the head of the rocking bar, a rod pivoted to the free end of the rocking bar, and a toggle connection at the other end of the rod; substantially as specified.

3. A lock for car-doors consisting of a rocking bar, the end of which is adapted to engage with the ear-door, a rod pivoted to the free end of the rocking bar, a toggle c011- nection at the other end of the rod, and a shaft adapted to givea partial rotatory movement to the toggle connection; substantially as specified.

4. A lock for oar-doors consisting of a pivoted rocking bar, one end. of which is adapted to lock the door when the door is in its closed. position, a rod pivoted to the outer end of the rocking bar, and an arm pivoted at one end to a movable support and at the other end to the upper end of the rod, the parts being so arranged that the dropping of the outer end of the rocking bar brings the rocking bar to lock position; substantially as specified.

5. A look for car-doors consisting of a pivoted rocking bar, one end of which is adapted to lock the door when the door is in its closed position, a rod pivoted to the outer end of the rocking bar, an arm pivoted at one end to a movable support and at the other end to the upper end of the rod, and the operating-shaft, the parts being so arranged that the dropping of the outer end of the rocking bar brings the rocking bar to lock position; substantially as specified.

In testimony whereof I have hereunto set my hand.

CYRUS M. CARNAHAN. Witnesses:

S. C. NIECE, A. B. RUNKLE. 

